//package com.study.dubbo.service.zipkin.dubbo;
//
//import com.alibaba.dubbo.common.Constants;
//import com.alibaba.dubbo.common.extension.Activate;
//import com.alibaba.dubbo.rpc.*;
//
///**
// * @author lin
// * @create 2018-08-07 18:29
// **/
//@Activate(group = {Constants.PROVIDER, Constants.CONSUMER}, value = "tracing")
//public class ZipkinDubboFileter implements Filter {
//    @Override
//    public Result invoke(Invoker<?> invoker, Invocation invocation) throws RpcException {
//        return null;
//    }
//}
